Seriously, I think he should do it alone, unless he is mentally unstable, such as schizophrenic, psychotic, or bipolar, in which case I can't recommend it.
LSD is such a predictable compound with such a gradual comeup that it is never truly overwhelming, it is perhaps the most mild psychedelic I know of. If the OP sticks 1 tab, even if it is very good quality, he will be able to handle the trip on his own. Other people tend to skew the direction of your trip, since there needs to be some social involvement, if only on a non-verbal communication aspect, which tends to distract you from blazing your own trail of mind-exploration when you're in your own world.
The psychedelic effects come on in a slow crescendo, so even if you take a high dose (2-3 tabs of good quality), you will be able to keep up with your transcendence in to your own world, it's not a sudden comeup at all, so the trip can be consciously aborted with 2mg Xanax if needed. LSD tends to not violently strip your ego away from you like with mushrooms, but rather lets you consciously set it aside for 8 hours. Basically, I know how when I look in the mirror that I am ErgicMergic, but I choose to set him aside for 8 hours to explore him from a different perspective. Mushrooms will sometimes leave you wondering who you are, where you are, why you're there, which can be very frightening. To be honest, I'm scared of trying mushrooms, but love LSD, I just don't like the idea of feeling the first alerts of a mushroom trip, then all of a sudden forget that I'm tripping because the effects came on way too suddenly for my brain to keep up.
You need to be willing to explore every little facet of yourself, if something about yourself frightens you and you can't accept it, then I would not recommend psychedelics. One needs a fully open mind, and an ideal mind and mindset (look this up), if these aren't there then you can always trip at another time in your life when you're ready.